Wrench



W H E N C H Apphcation led Mqy 23, 1898 w EN. b.

No. 612,589. D. C. JOHNSTON.

(Il o Modell) 715257723663 ,Gly/MM as an ordinary nut or monkey wrenchor as STATES rrrnn.

WRENCH.

` SPECIFICATION forming part of Letters Patent No. 612,589, datedOctober 18, 1898.

Application filed May 28, 1898. Serial No. 681,484. (No model.)

To al?, wiz/0m t may concern:

4Be it known that I, DAvID C. JOHNSTON, a citizen of the United States,residing at Marietta, in the county of Washington and State of Ohio,have invented certain new and useful Improvements in Wrenches; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to certain new and useful improvements inwrenches; and it consists, substantially, in such features ofconstruction, arrangement, and combination of parts as will hereinafterbe more particularly described.

The invention has for its object to provide a wrench of exceedinglysimple construction and one that is cheap to manufacture as well as easyto manipulate and control.

A further object of the invention is to provide a wrench capable ofbeing used either a pipe-wrench and also to provide a wrench of thischaracter comprising but few parts or elements.

A still further object is the provision of av movable or sliding jawcapable of ready removal and replacement when the same` has become wornor broken and also to provide for the ready substitution of movable jawsof different forms or construction to suit different uses.

'The above and additional objects I attain by the means illustrated inthe accompanying drawing, in which the figure represents a side view,partly in longitudinal section, of a wrench constructed in accordancewith my invention.

My invention is capable of different embodiments in its general' formand arrangement; but the form herein shown is preferred for severalreasons, which for the sake of conciseness will not be specified herein.

In the drawing, A represents the wrench as a Whole, and, as will beobserved, the same comprises but three separate elements or members,each one of which is formed to the desired shape, while the three areproperly A adapted to each other. The wrench 1s constructed with a longshank At, formed or provided at one end with a stationary jaw 3 whichmay comprise a hammer G, and at a suitable distance from the other endthe shank is rounded into a suitable handle or grip portion. On itsinner surface X the said shank is recessed or cut out at y for asuitable distance from the stationary jaw 3 and forming a stop or abutment mfor the movable jaw at to limit the outward movement or adjustment ofthe latter. The said movable jaw is provided with a short shank AS,which works in the recess y of the shank of the sta tionary jaw and islimited in its outward movement by the stop or abutment Any suitablemeans can be provided for moving or adjusting the said movable jaw, andas an advantage of the construction shown is mentioned'the ease andfacility with which the movable jaw lcan be taken out and replaced byanother of different form when the first has become worn or broken. Theshank A2 of the stationary jaw is formed for a part of its length with aright-hand half screw-thread 5, and for a suitable distance from the mowable jaw et the short shank AB thereof is simi-` larly formed with aleft-hand half screw thread 6. Surrounding both of the said shanks is anadjusting device or sleeve E, which is threaded interiorly at 7 and 8 inaccordance with the said threaded portions of the shanks. As is obvious,the movable jaw is adjustable back and forth by turning the sleeve oradjusting device E in the proper di rection. I sometimes, though notnecessarily, provide rings coupon the outer sur face of the sleeve E toassist in grasping the same with the hand for turning.

The construction and operation of my improved wrench will be understoodwithout further description, and it is also understood that I am notlimited to the precise details shown and described.

Having thus described my invention, what I claim is v A wrenchcomprising a long shank having at one end a stationary jaw and at theother an integral or grip portion, the said shank being recessed on itsinner side to constitute a stop for a movable jaw, and having a rghthand half screw-thread on`its outer side, a movable jaw having a shortshank movingin IOO said recess and abutting against the stop to Intestimony whereof I afx my signature limit the outward movement thereof,and proin presence of two Witnesses. vided with a left-hand halfscrew-thread, and i an adjusting device or sleeve fitting around DAVID CJOHNS ON 5 both shanks and threaded internally in ac- Witnesses:

cordance with the threads on the Shanks, snb- L. E. JOHNSTON, stantiallyas described. M. M. DYE.

